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https://www.readbyqxmd.com/read/27913995/adenoma-prevalence-and-distribution-among-us-latino-subgroups-undergoing-screening-colonoscopy
#1
Sumedha V Chablani, Lina Jandorf, Katherine DuHamel, Kristen K Lee, Pathu Sriphanlop, Cristina Villagra, Steven H Itzkowitz
BACKGROUND: Colorectal cancer (CRC) is the second leading malignancy diagnosed among US Latinos. Latinos in the USA represent a heterogeneous amalgam of subgroups varying in genetic background, culture, and socioeconomic status. Little is known about the frequency of CRC precursor lesions found at screening colonoscopy among Latino subgroups. AIM: The aim was to determine the prevalence and distribution of histologically confirmed adenomas found at screening colonoscopy among average-risk, asymptomatic US Latinos according to their subgroup and socio-demographic background...
December 2, 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/27913932/almost-2-of-spanish-breast-cancer-families-are-associated-to-germline-pathogenic-mutations-in-the-atm-gene
#2
A Tavera-Tapia, L Pérez-Cabornero, J A Macías, M I Ceballos, G Roncador, M de la Hoya, A Barroso, V Felipe-Ponce, R Serrano-Blanch, C Hinojo, M D Miramar-Gallart, M Urioste, T Caldés, S Santillan-Garzón, J Benitez, A Osorio
PURPOSE: There is still a considerable percentage of hereditary breast and ovarian cancer (HBOC) cases not explained by BRCA1 and BRCA2 genes. In this report, next-generation sequencing (NGS) techniques were applied to identify novel variants and/or genes involved in HBOC susceptibility. METHODS: Using whole exome sequencing, we identified a novel germline mutation in the moderate-risk gene ATM (c.5441delT; p.Leu1814Trpfs*14) in a family negative for mutations in BRCA1/2 (BRCAX)...
December 2, 2016: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/27913912/genetic-counselor-practices-involving-pediatric-patients-with-fap-an-investigation-of-their-self-reported-strategies-for-genetic-testing-and-hepatoblastoma-screening
#3
Caitlin E Lawson, Thomas M Attard, Hongying Dai, Seth Septer
Familial adenomatous polyposis (FAP) is a cancer predisposition syndrome that causes early-onset polyposis and is associated with an increased risk for hepatoblastoma. There is currently a lack of consensus on when to order APC (adenomatous polyposis coli) gene testing or implement surveillance for hepatoblastoma. An online questionnaire was completed by 62 genetic counselors to capture their current practices regarding these questions. Extracolonic findings associated with FAP that were most likely to prompt APC testing in an otherwise asymptomatic 10 year-old child with a negative family history were multiple desmoid tumors, congenital hypertrophy of the retinal pigment epithelium (CHRPE), jaw osteomas, and hepatoblastoma...
December 3, 2016: Journal of Genetic Counseling
https://www.readbyqxmd.com/read/27913752/expression-and-bioactivity-of-human-alpha-fetoprotein-in-a-bac-to-bac-system
#4
Bo Lin, Kun Liu, Wenting Wang, Wei Li, Xu Dong, Yi Chen, Yan Lu, Junli Guo, Mingyue Zhu, Mengsen Li
Alpha-fetoprotein (AFP) is an early serum growth factor in fetal embryonic development and hepatic oncogenesis. A growing number of investigations of AFP as a tumor-specific biomarker have concluded that AFP is an important target for cancer treatment. AFP also plays an immunomodulatory role in the treatment of several autoimmune diseases, such as rheumatoid arthritis, multiple sclerosis, myasthenia gravis, and thyroiditis. In an effort to support biochemical screening and drug design and discovery, we attempted to express and purify human AFP in a Bac-to-Bac system...
December 2, 2016: Bioscience Reports
https://www.readbyqxmd.com/read/27913578/characterization-of-egfr-t790m-l792f-and-c797s-mutations-as-mechanisms-of-acquired-resistance-to-afatinib-in-lung-cancer
#5
Yoshihisa Kobayashi, Koichi Azuma, Hiroki Nagai, Young Hak Kim, Yosuke Togashi, Yuichi Sesumi, Masato Chiba, Masaki Shimoji, Katsuaki Sato, Kenji Tomizawa, Toshiki Takemoto, Kazuto Nishio, Tetsuya Mitsudomi
Lung cancers harboring common EGFR mutations respond to EGFR tyrosine kinase inhibitors (TKIs). We previously reported that tumors with exon 18 mutations are particularly sensitive to irreversible second-generation (2G) afatinib compared with 1G-TKIs. However, data on the mechanisms of acquired resistance to afatinib are limited. We established afatinib-resistant cells by transfecting Ba/F3 cells with common or exon 18 (G719A and Del18) mutations and subjecting them to chronic exposure to increasing concentrations of afatinib...
December 2, 2016: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/27913567/drug-repositioning-screens-identify-triamterene-as-a-selective-drug-for-the-treatment-of-dna-mismatch-repair-deficient-cells
#6
Delphine Guillotin, Philip Austin, Rumena Begum, Marta O Freitas, Ashirwad Merve, Tim Brend, Susan C Short, Silvia Marino, Sarah A Martin
PURPOSE: The DNA Mismatch repair (MMR) pathway is required for the maintenance of genome stability. Unsurprisingly, mutations in MMR genes occur in a wide range of different cancers. Studies thus far have largely focused on specific tumor types or MMR mutations, however it is becoming increasingly clear that a therapy targeting MMR-deficiency in general would be clinically very beneficial. EXPERIMENTAL DESIGN: Based on a drug-repositioning approach, we screened a large panel of cell lines with various MMR deficiencies from a range of different tumor types with a compound drug library of previously approved drugs...
December 2, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27913529/ph-like-acute-lymphoblastic-leukemia
#7
Thai Hoa Tran, Mignon L Loh
Philadelphia chromosome-like acute lymphoblastic leukemia (Ph-like ALL) is a newly identified high-risk (HR) B-lineage ALL subtype, accounting for ∼15% of children with National Cancer Institute-defined HR B-ALL. It occurs more frequently in adolescents and adults, having been reported in as much as 27% of young adults with ALL between 21 and 39 years of age. It exhibits adverse clinical features, confers a poor prognosis, and harbors a diverse range of genetic alterations that activate cytokine receptor genes and kinase signaling pathways, making it amenable to treatment with tyrosine kinase inhibitor (TKI) therapy...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913498/long-term-risk-of-second-malignancy-and-cardiovascular-disease-after-hodgkin-lymphoma-treatment
#8
Flora E van Leeuwen, Andrea K Ng
Long-term survivors of Hodgkin lymphoma (HL) experience several late adverse effects of treatment, with second malignant neoplasms (SMNs) and cardiovascular diseases (CVDs) being the leading causes of death in these patients. Other late effects have also been identified, such as pulmonary dysfunction, endocrinopathies (thyroid dysfunction, infertility), neck muscle atrophy, and persistent fatigue. HL survivors have two- to fourfold increased risks to develop SMNs and CVD compared with the general population...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913496/discussing-and-managing-hematologic-germ-line-variants
#9
Wendy Kohlmann, Joshua D Schiffman
With the introduction of genomic technologies, more hereditary cancer syndromes with hematologic malignancies are being described. Up to 10% of hematologic malignancies in children and adults may be the result of an underlying inherited genetic risk. Managing these patients with hereditary hematologic malignancies, including familial leukemia, remains a clinical challenge because there is little information about these relatively rare disorders. This article covers some of the issues related to the diagnosis and interpretation of variants associated with hereditary hematologic malignancies, including the importance of an accurate family history in interpreting genetic variants associated with disease...
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913398/cancer-burden-with-ageing-population-in-urban-regions-in-china-projection-on-cancer-registry-data-from-world-health-organization
#10
REVIEW
Kelvin K F Tsoi, Hoyee W Hirai, Felix C H Chan, Sian Griffiths, Joseph J Y Sung
BACKGROUND: China is facing the challenges of an expanding ageing population and the impact of rapid urbanization, cancer rates are subsequently increasing. This study focuses on the changes of the ageing population and projects the incidence of common ageing-related cancers in the urban regions in China up to 2030. SOURCES OF DATA: Cancer incidence data and population statistics in China were extracted from the International Agency for Research on Cancer. AREAS OF AGREEMENT: Due to improving longevity in China, continuous and remarkable increasing trends for the lung, colorectal and prostate cancers are expected...
December 1, 2016: British Medical Bulletin
https://www.readbyqxmd.com/read/27913182/virtual-screening-and-biophysical-studies-lead-to-hsp90-inhibitors
#11
Renjie Huang, Daniel M Ayine-Tora, M Nasri Muhammad Rosdi, Yu Li, Jóhannes Reynisson, Ivanhoe K H Leung
Heat shock protein 90 (HSP90) is a molecular chaperone that plays important functional roles in cells. The chaperone activity of HSP90 is regulated by the hydrolysis of ATP at the protein's N-terminal domain. HSP90, in particular the N-terminal domain, is a current inhibition target for therapeutic treatments of cancers. This paper describes an application of virtual screening, thermal shift assaying and protein NMR spectroscopy leading to the discovery of HSP90 inhibitors that contain the resorcinol structure...
November 23, 2016: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/27913106/innovations-in-radiotherapy-technology
#12
I J Feain, L Court, J R Palta, S Beddar, P Keall
Many low- and middle-income countries, together with remote and low socioeconomic populations within high-income countries, lack the resources and services to deal with cancer. The challenges in upgrading or introducing the necessary services are enormous, from screening and diagnosis to radiotherapy planning/treatment and quality assurance. There are severe shortages not only in equipment, but also in the capacity to train, recruit and retain staff as well as in their ongoing professional development via effective international peer-review and collaboration...
November 29, 2016: Clinical Oncology: a Journal of the Royal College of Radiologists
https://www.readbyqxmd.com/read/27911980/cell-based-dna-demethylation-detection-system-for-screening-of-epigenetic-drugs-in-2d-3d-and-xenograft-models
#13
Khushboo Agrawal, Viswanath Das, Miroslav Otmar, Marcela Krečmerová, Petr Džubák, Marián Hajdúch
Aberrant DNA methylation that results in silencing of genes has remained a significant interest in cancer research. Despite major advances, the success of epigenetic therapy is elusive due to narrow therapeutic window. A wide variety of naturally occurring epigenetic agents and synthetic molecules that can alter methylation patterns exist, however, their usefulness in epigenetic therapy remains unknown. This underlines the need for effective tumor models for large-scale screening of drug candidates with potent hypomethylation activity...
December 2, 2016: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/27911708/regulation-of-primary-cilia-formation-by-the-ubiquitin-proteasome-system
#14
REVIEW
Robert F Shearer, Darren N Saunders
Primary cilia form at the surface of most vertebrate cell types, where they are essential signalling antennae for signal transduction pathways important for development and cancer, including Hedgehog. The importance of primary cilia in development is clearly demonstrated by numerous disorders (known as ciliopathies) associated with disrupted cilia formation (ciliogenesis). Recent advances describing functional regulators of the primary cilium highlight an emerging role for the ubiquitin-proteasome system (UPS) as a key regulator of ciliogenesis...
October 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27911673/genetic-syndromes-associated-with-central-nervous-system-tumors
#15
Charmi Vijapura, Ehab Saad Aldin, Aristides A Capizzano, Bruno Policeni, Yutaka Sato, Toshio Moritani
Several genetic tumor syndromes have associated central nervous system (CNS) neoplasms. The spectrum of syndromes that have intracranial tumor manifestations includes ataxia telangiectasia, Cowden syndrome, familial adenomatous polyposis, hereditary non-polyposis-related colorectal cancer, Li-Fraumeni syndrome, Gorlin syndrome, neurofibromatosis types 1 and 2, multiple endocrine neoplasia type 1, tuberous sclerosis complex, von Hippel-Lindau disease, and Turcot syndrome. Many of these disorders are inherited in an autosomal dominant fashion, and identification of the associated genetic defects has led to improved understanding of the molecular pathways involved in tumorigenesis, helping pave the way to the emergence of molecularly targeted therapeutics...
December 2, 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27911488/hepatocellular-carcinoma-as-an-emerging-morbidity-in-the-thalassemia-syndromes-a-comprehensive-review
#16
REVIEW
Hassan M Moukhadder, Racha Halawi, Maria Domenica Cappellini, Ali T Taher
The incidence of hepatocellular carcinoma (HCC) in patients with thalassemia is on the rise. The 2 well recognized HCC risk factors in thalassemia are iron overload and chronic viral infection with hepatitis C. The carcinogenicity of iron is related to its induction of oxidative damage, which results in genotoxicity, and to immunologic dysregulation, which attenuates cancer immune surveillance. Chronic hepatitis B and C infections lead to necroinflammation, which can prompt progression to HCC, but an independent role of hepatitis B virus in hepatic carcinogenesis among patients with thalassemia has not been demonstrated...
December 1, 2016: Cancer
https://www.readbyqxmd.com/read/27911486/extended-mortality-results-for-prostate-cancer-screening-in-the-plco-trial-with-median-follow-up-of-15-years
#17
Paul F Pinsky, Philip C Prorok, Kelly Yu, Barnett S Kramer, Amanda Black, John K Gohagan, E David Crawford, Robert L Grubb, Gerald L Andriole
BACKGROUND: Two large-scale prostate cancer screening trials using prostate-specific antigen (PSA) have given conflicting results in terms of the efficacy of such screening. One of those trials, the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial, previously reported outcomes with 13 years of follow-up. This study presents updated findings from the PLCO trial. METHODS: The PLCO trial randomized subjects from 1993 to 2001 to an intervention or control arm...
December 1, 2016: Cancer
https://www.readbyqxmd.com/read/27911073/reducing-risky-alcohol-use-what-health-care-systems-can-do
#18
Amity E Quinn, Mary Brolin, Maureen T Stewart, Brooke Evans, Constance Horgan
Risky, non-dependent alcohol use is prevalent in the United States, affecting 25% of adults (Centers for Disease Control and Prevention, 2014b). Massachusetts has higher rates of alcohol use and binge drinking than most states (Substance Abuse and Mental Health Services Administration, 2015). Serious physical, social, and economic consequences result. Excessive alcohol use contributes to cancer, cardiovascular disease, sleep disorders, birth defects, motor vehicle injuries, and suicide, and it complicates management of chronic illnesses (Green, McKnight-Eily, Tan, Mejia, & Denny, 2016; Laramee et al...
April 27, 2016: Issue Brief
https://www.readbyqxmd.com/read/27910927/novel-chemoimmunotherapeutic-strategy-for-hepatocellular-carcinoma-based-on-a-genome-wide-association-study
#19
Kaku Goto, Dorcas A Annan, Tomoko Morita, Wenwen Li, Ryosuke Muroyama, Yasuo Matsubara, Sayaka Ito, Ryo Nakagawa, Yasushi Tanoue, Masahisa Jinushi, Naoya Kato
Pharmacotherapeutic options are limited for hepatocellular carcinoma (HCC). Recently, we identified the anti-tumor ligand MHC class I polypeptide-related sequence A (MICA) gene as a susceptibility gene for hepatitis C virus-induced HCC in a genome-wide association study (GWAS). To prove the concept of HCC immunotherapy based on the results of a GWAS, in the present study, we searched for drugs that could restore MICA expression. A screen of the FDA-approved drug library identified the anti-cancer agent vorinostat as the strongest hit, suggesting histone deacetylase inhibitors (HDACis) as potent candidates...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910901/risk-factors-for-endometrial-cancer-results-from-a-hospital-based-case-control-study
#20
Maryam Ghanbari Andarieh, Mouloud Agajani Delavar, Dariush Moslemi, Sedighe Esmaeilzadeh
Objectives: The purpose of this investigation was to examine the association between endometrial cancer and possible etiological agents. Methods: A case-control study was conducted in Iran between March 2012 and May 2016. The demographic and reproductive factors of 205 women with endometrial cancer were compared, and 590 healthy cases were participated in the control group. For each endometrial cancer case, there were three controls, who were matched in terms of age and residence. The data were considered significant at p ≤0...
January 10, 2016: Asian Pacific Journal of Cancer Prevention: APJCP
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